# OpenHIIT vs Interval(x)

The clearest difference is update cadence: Interval(x) at every 10 days against OpenHIIT's monthly. OpenHIIT's advantage is ratings volume (8 vs 1) and iOS requirement (13.0 vs 18.1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for OpenHIIT against 5.0 for Interval(x). That said, the two scores are not equally well evidenced: OpenHIIT has 8 ratings behind it against 1, so its average is the more settled of the two.

OpenHIIT ships an update monthly, Interval(x) every 10 days. The most recent releases landed on August 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | OpenHIIT | Interval(x) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (8 ratings)](https://appshunter.io/ios/app/openhiit/id6459617819/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/intervalx/id6739734149/reviews) |
| Number of ratings | **8** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free | Free |
| Size | 26 MB | 2 MB |
| Requires iOS | **13.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Abigail Mabe](https://appshunter.io/developer/1701885217) | [ShapeHaven Innovations LLC](https://appshunter.io/developer/1747127977) |

## What reviewers say

### OpenHIIT

[App page](https://appshunter.io/ios/app/openhiit/id6459617819)

This open-source interval timer app helps optimize various activities like workouts, work sprints, and study sessions. It offers customizable timing, precise controls, and clear auditory and visual alerts to keep you motivated and on track. Users can also join a collaborative community to contribute to its development.

**Highlights:** Customizable interval timing, Precise and user-friendly controls, Auditory and visual alerts, Open-source community collaboration, Ad-free experience

**Features:** macOS Compatibility

**In-app purchases:** none


### Interval(x)

[App page](https://appshunter.io/ios/app/intervalx/id6739734149)

An open-source interval timer designed for precision and privacy. Configure work and rest periods with millisecond accuracy for training or daily routines. It offers a transparent, data-free experience for users who value control and simplicity.

**Highlights:** Open Source Transparency, Zero Data Collection, Millisecond Interval Precision, Customizable Work/Rest Periods, Lightweight and Power-Efficient, Privacy-First Design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpenHIIT free?

OpenHIIT is free to download, with no in-app purchases.

### Is Interval(x) free?

Interval(x) is free to download, with no in-app purchases.

### Which has better reviews, OpenHIIT or Interval(x)?

OpenHIIT and Interval(x) are both rated 5.0 out of 5 on the App Store, from 8 and 1 ratings respectively.

### Do OpenHIIT or Interval(x) have ads?

Neither OpenHIIT nor Interval(x) shows ads.

### Which is updated more often, OpenHIIT or Interval(x)?

OpenHIIT ships an update monthly, and Interval(x) every 10 days. Most recently, OpenHIIT was updated on August 14, 2026 and Interval(x) on September 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*